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Commit 6d9f0790 authored by Jose Abreu's avatar Jose Abreu Committed by David S. Miller
Browse files

net: stmmac: First Queue must always be in DCB mode 



According to DWMAC databook the first queue operating mode
must always be in DCB.

As MTL_QUEUE_DCB = 1, we need to always set the first queue
operating mode to DCB otherwise driver will think that queue
is in AVB mode (because MTL_QUEUE_AVB = 0).

Signed-off-by: default avatarJose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4894ac6b

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

+7 −0
Original line number Original line Diff line number Diff line
@@ -150,6 +150,13 @@ static void stmmac_mtl_setup(struct platform_device *pdev, 
	plat->rx_queues_to_use = 1;

	plat->rx_queues_to_use = 1;

	plat->tx_queues_to_use = 1;

	plat->tx_queues_to_use = 1;





	/* First Queue must always be in DCB mode. As MTL_QUEUE_DCB = 1 we need

	 * to always set this, otherwise Queue will be classified as AVB

	 * (because MTL_QUEUE_AVB = 0).

	 */

	plat->rx_queues_cfg[0].mode_to_use = MTL_QUEUE_DCB;

	plat->tx_queues_cfg[0].mode_to_use = MTL_QUEUE_DCB;



	rx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-rx-config", 0);

	rx_node = of_parse_phandle(pdev->dev.of_node, "snps,mtl-rx-config", 0);

	if (!rx_node)

	if (!rx_node)

		return;

		return;